How close did the Japanese get to Port Moresby during the Kokoda Campaign?

The Japanese struggled to reach 50km from Port Moresby where their assault foundered on 25 September 1942 at Ioribaiwa Ridge. The Australians pursued the retreating enemy. By early November the Japanese were cleared from the Kokoda Track after 97 days of bloodshed that cost them several thousand lives – many through disease. The Australians lost 600 men.